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| More Kitchen Science Ideas - Eggsperiments - Next up: Naked Egg |
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Its time for...a naked egg! This experiment takes time but is sure to amaze your children - and their friends too.  What you need: - An egg or two - A bottle of white vinegar - A clear container that is big enough for all your eggs, with a cover - A large spoon Now do this: 1. Put the eggs in the container, and cover them with the vinegar. Make sure the eggs are not touching each other. 2. Cover the container and place it in the refridgerator. You can get the kids to take a photo plus describe what they see. 3. After 24 hours (i.e. the next day), take out the container. 4. With the spoon, carefully lift the eggs out, and throw away the vinegar. 5. Put the eggs back in the empty container, add fresh vinegar and put the eggs back in the refridgerator. Again, record what you see. 6. After another 24 hours, take the container out. Very carefully, lift out the eggs (they would be very soft) and rinse them. Throw away any 'broken' or oozing eggs. 7. You should have eggs without shells which are translucent. Poke it gently with your finger (not the fingernail) and watch it wobble! What happened? Vinegar contains acetic acid, which helps to dissolve the eggshell. Did you notice bubbles on the eggshell after you added the vinegar? What happened was that the calcium carbonate in the eggshells breaks down into calcium + carbonate, and the carbonate is released in the form of carbon dioxide bubbles. Would you like to share other kitchen experiments? Drop us an idea or two, and collect some EduPoints as well.
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